Trochilus

noun

1. A trochil; one of several different birds.
2. [capitalized] In ornithology, a Linnean genus of humming-birds, type of the family Trochilidæ, formerly including all the species then known, since divided into perhaps 200 modern genera.
3. In architecture, same as scotia.
5. A genus of humming birds. It Formerly included all the known species.